Adhesive-tape cutting device of an adhesive-tape holder

Abstract

An adhesive-tape cutting device of an adhesive-tape holder has a position-limiting device provided between the vertical short side of a slide base and the push plate portion of a press plate. The position-limiting device is composed of two position-limiting holes bored on the vertical short side of the slide base and two insert studs fixed on the push plate portion of the press plate, and the two insert studs respectively received in the two position-limiting holes to prevent the slide base from sliding leftward or rightward.

I claim:  
     
       1. An adhesive-tape cutting device of an adhesive-tape holder comprising: 
       an adhesive-tape holder having a handle under an adhesive-tape base and a left side plate provided on a left end, a pivotal shaft provided at a proper position of said left side plate and fixed with said adhesive-tape holder, said pivotal shaft fitted around with a roller;  
       a support rod fixed at a proper position of said left side plate;  
       a blade holder positioned on one end of said adhesive-tape holder and provided on top with two fixing studs respectively having a threaded hole, said blade holder further bored with a receiving groove in the center and two slide grooves respectively on the left side and the right side of said receiving groove;  
       a blade mounted on said blade holder and provided with two slide holes matching with said two threaded holes of said blade holder, said two slide holes respectively fitted around said two fixing studs of said blade holder, said blade further having two positioning holes corresponding to said two slide grooves of said blade holder;  
       a slide base mounted on said blade to activate said blade to shift back and forth, said slide base having two slide holes on an upper surface to match with said two slide holes of said blade, a projecting stud fixed on an inner wall of a vertical short side of the slide base and a spring having one end fitted around said projecting stud and the other end inserted in said receiving groove of said blade holder, said slide base further provided with two fixing studs protruding downward to be respectively inserted through said two fixing holes of said blade and into said slide grooves of said blade holder;  
       a press plate formed with a vertical push plate portion at a lower end, said vertical push plate portion pushing against said slide base, a curved support member formed between said vertical push plate portion and the rest of said plate to closely rest on said support rod of said side plate; and  
       a position-limiting device provided between said vertical short side of said slide base and said push plate portion of said press plate to prevent said slide base from sliding leftward or rightward, said position-limiting device including two position-limiting holes bored on said vertical short side of said slide base and two insert studs secured on said push plate of said press plate, said two insert studs respectively received in said two position-limiting holes.  
     
     
       2. The adhesive-tape cutting device of an adhesive-tape holder as claimed in  claim 1 , wherein the diameter of said position-limiting holes of said slide base are larger than that of said insert studs of said press plate. 
     
     
       3. The adhesive-tape cutting of an adhesive-tape holder as claimed in  claim 1 , wherein said support rod of said side plate is formed with an arcuate surface for said support member of said press plate to rest thereon. 
     
     
       4. An adhesive-tape cutting device of an adhesive-tape holder comprising: 
       an adhesive-tape holder having a handle under an adhesive-tape base and a left side plate provided on a left end, a pivotal shaft provided at a proper position of said left side plate and fixed with said adhesive-tape holder, said pivotal shaft fitted around with a roller;  
       a support rod fixed at a proper position of said left side plate;  
       a blade holder positioned on one end of said adhesive-tape holder and provided on top with two fixing studs respectively having a threaded hole, said blade holder further bored with a receiving groove in the center and two slide grooves respectively on the left side and the right side of said receiving groove;  
       a blade mounted on said blade holder and provided with two slide holes matching with said two threaded holes of said blade holder, said two slide holes respectively fitted around said two fixing studs of said blade holder, said blade further having two positioning holes corresponding to said two slide grooves of said blade holder;  
       a slide base mounted on said blade to activate said blade to shift back and forth, said slide base having two slide holes on an upper surface to match with said two slide holes of said blade, a projecting stud fixed on an inner wall of a vertical short side of the slide base and a spring having one end fitted around said projecting stud and the other end inserted in said receiving groove of said blade holder, said slide base further provided with two fixing studs protruding downward to be respectively inserted through said two fixing holes of said blade and into said slide grooves of said blade holder;  
       a press plate formed with a vertical push plate portion at a lower end, said vertical push plate portion pushing against said slide base, a curved support member formed between said vertical push plate portion and the rest of said plate to closely rest on said support rod of said side plate; and  
       a position-limiting device provided between said vertical short side of said slide base and said push plate portion of said press plate to prevent said slide base from sliding leftward or rightward, said position-limiting device including two position-limiting holes provided on said push plate portion of said press plate and two insert studs secured on said vertical short side of said slide base, said two position-limiting holes respectively receiving said two insert studs.